A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5905-01-433-2831
NSN 6610-01-419-0929
NSN 5985-00-595-8633
NSN 6110-00-390-8115
NSN 5998-00-218-1360
NSN 5990-01-516-9665
NSN 6650-01-497-1773
NSN 5915-01-213-1900
NSN 5965-00-811-3793
NSN 5935-00-187-0006
NSN 5835-01-408-7576
NSN 6685-01-175-3431